Collapsible jack



March 9, 1954 A. M. OLSON I COLLAPSIBLE JACK Filed Sept 25, 1952 5 Sheets-Sheet l Alton M. Olson INVENTOR.

March 9, 1954 A. M. OLSQN COLLAPSIBLE JACK 3 Sheets-Sheet 2 Filed Sept. 25, @952 Allan M. Olson INVENTOR.

March 9,1954 A M, LSO 2,671,636

' COLLAPSIBLE JACK Filed Spt. 25, 1952 s Sheets-Sheet 5 Fig. 7

Alton M. Olson v INVENTQR.

Y Wm, 15%,

Fig. /0

Patented Mar. 9, 1954 UNITED STATES PATENT OFF-ICE 'COLLAPSIBLE JACK Alton M. Olson, Seattle, Wash.

' Amlliafioli septernber 25, 1952; Se'rialN'o'. 311,378

8 Claims. 1

This invention relates to new and useful improvements in vehicle jacks and the primary object of the present invention is to provide'a collapsible vehicle jack that is quickly and readily folded into a small and compact structure for storing, shipping or carrying.

Another important object of the present invention is to provide a collapsible jack including 'a'tel'escoped base composed of two channel sections that rotatably support jack screw operating rods which are readily'ooupled together when the sections are extended, whereby a jack screw operatively "c'onneeted toone of the rods may be rotated from a. point remote therefrom.

Another object ofthe present invention is to provide a collapsible jack of the aforementioned character involving a collapsible handle structure that may be 'folded over the sections when the latter are disposed in juxtaposition one within the other.

A further object or the present invention is to provide a vehicle jack including a supporting hollow post, a screw actuated'tube slidably received in the post and-having longitudinally spaced lugs that project laterally from a slot in the post to selectively engage a lifting element slidabl'e on the post, whereby initial longitudinal adjustment of the lifting element relative to the post and tube may be'acdomplished in order to reduce the time required for moving the lift element against a vehicle part and further providing for variable adjustments of the lift element. 7

A st'ill further aim of the present invention is to provide a vehicle jack of the aforementioned character that is extremely simple and practical in construction, strong and reliable in use, small and compact in structure, inexpensive to manufacture and maintaim'and otherwise well adapted for the purposes for which the same is intended.

-Other objects and advantages reside in the details of construction and operation as more fully hereinafter described and claimed, referencebeing'had to the accompanying drawings forming part hereof, wherein like numerals refer to like parts throughout, and in which:

Figure 1 is a side elevational view of the present invention and showing the auxiliary channel section disposed in a vertically inclined position;

Figure 2-is-an enlargedlongitudinal vertical sectional viewot 'Figurel but showing the auxiliary channel coaxial with the base channel section;

Figure 3 is anenlarged transverse vertical-sectic-rial view taken'substanti-allyon the plane of section line 33 of Figure2;

Figure '4 is a plan view of Figure z'in-reduced scale and showing the" parts of the jack disposed in their carrying position;

Figure 5 is a longitudinal vertical sectional view taken substantially on the plane of-se'etion line 55 of Figure 4;

Figure 6 is an enlarged transverse verti'calsec tional view taken substantially on the plane-of section line 6-45 of Figurefi;

Figure '7 is an enlargedfragmentary view of Figure 2 with parts broken awayandshovm in section;

Figure 8 is a'horizonta1-.sectional viewtaken substantially on the plane ofsection'iine-ii fi of Figure '7;

Figure 9 is an enlarged fragmentary view oi Figure 2 and with parts of the eollapsibl'e handle structure broken away for the convenienceof explanation Figure 10 is an enlarged iragmentaryview of Figure 4 the lift element being removedifromits carrying position;

Figure 1 1 is an enlarged detail view of Figure 2 showing the auxiliary 'channeh'section ra'ised to'an inclinedposition'; and

Figure 12 is a perspectiveview ofthe lift-eie ment.

'Ptef-erring now to the drawings in detail, wherein for the" purpose of illustration, there is disclosed a" preferred embodiment of the present invention, 1 the numeral Ill represents-am elongated base channel section having 'an enlarged forward end l 2 that is suitably fixed uponacombinedtraction plate and skid I4. The-plate and skid M projects laterally from :bot-h'sides oi the section It and its-.forwardend is bentupwardly to form a flangeifi to guide the section: was it is-sl-id under a vehicleor the like.

A pair of spaced parallel substantially iL-shaped arms is are pivoted, as at 20, to the inner :taces of the flanges of the -section- Ill:at.-its-forward end for movement intoand out of the section ll. The arms I8 are connectedby a-icurved istrap22 that is remova'bly secured-about ahollow'post M by a fastener 26.

The post Y 24 slidably receives an internally threaded tube za having longitudinally spaced teeth or lugs 30 onits outer surface thatare slidably received in a longitudinal:slct 'ilil in-=the post 24. A jackscrew 34 is threadedin tube 28 and includes aperipheral groovetsthat receives the inner endof fastener 2fi to--ho1dtthe screw 36 against sliding movement in the. tube. "The lower end or .the screw. supportsa beveled gear Shier a purposepresentlyto be described.

The bifurcated and angulated shank portion 40 of a lift element 42 is slidably received on the post 24. The furcations of portion 40 are connected by a curved part 44 that extends behind the post 24. The lower edge of part 44 is provided with a notch 46 for selectively receiving the lugs 30, whereby the lift element may be adjusted longitudinally of the post and the tube.

The plate and skid I4 fixedly support a vertical socket 48 in which a stub shaft 50 is removably held by a screw 52. The upper end of stub shaft 50 enters a recess in the undersurface of the gear 38 to aid in supporting the gear.

The inturned ends of a U-shaped wire retainer member 54 are pivotally positioned in ears 56 extending upwardly from plate and skid I4. The member 54 extends about the socket 48 and may be raised to the position shown in Figure 5 to engage over the lift member 42 when the latter is removed from the post in order to hold the lift element against the plate and skid I4.

An auxiliary or rear channel section 58 is slidably received in the section I and the sections I 0 and 58 constitute a telescoped base. The spaced flanges of section 58, at their forward ends, are provided with rounded extensions 60 whose upper edges project upwardly from the flanges to form stops 62 for engaging rollers 64 on a transverse pin 66 extending through the flange at the rear end of section I0 over section 58, to limit outward sliding movement of section 58 relative to section I0 and to hold the forward end of section 58 relative to the rear end of section I0 as the section 58 is raised on extensions 60 to a vertically inclined position (Figures 1 and 11).

Pin 66 extends through channels 88 formed with the edges of a split bearing sleeve I0 as shown in Figure '3, The sleeve I0 rotatably supports the rear portion of a forward rod I2 whose forward end extends through a forward bearing I4 on the forward end of the section I0 and supports a beveled gear I6 that meshes with gear 38 (Figure '7) The reinforced rear end I8 of section 58 slidably and rotatably supports a rear rod 80 having a multisided forward end 82 that will enter the socket portion 84 of a universal coupling 86 attached to the rear end of rod I2. A shoulder 88 on the rod 80 forms an abutment for a coil spring 90 that surrounds the rod 80 and which is biased between the end I8 and the shoulder 88 to yieldingly urge the rod 80 forwardly and th end 82 in socket portion 84.

The rear end of rod 80 is provided with a lateral extension 92 that is pivotally attached to one end of a shank 94 having a shoulder 96. A locking sleeve 98 is slidably received on the shank 94 and is urged over the extension 92 by a coil spring I00 that extends about the shank and which is biased between the shoulder 96 and the sleeve 98.

The end of shank 94 remote from the rod 80 is provided with a lateral extension I02 that is pivoted to a short rod I04 having an enlarged free end I06. A locking sleeve I 08 is slidably received over the short rod I04 and is formed with an internal rib III]. A coil spring H2 about rod I04 is biased between the rib H0 and the end I06 to urge the sleeve I08 over the extension I02 as well as the short rod I04.

In practical use of the present invention the various parts of the jack will be disposed as shown best in Figures 4 and for carrying of the jack Or storage thereof. To use the jack, the retainer 54 is swung downwardly and the lift element removed from the section I 0 and placed 4 over the post 24 until the notch 46 receives a selected tooth 30. Then the element will pivot against the post to be retained therein.

Post 24 is pivoted to a position perpendicular to the section I0 and gear 38 meshes with gear 16 and is supported on the stub shaft 50. Section 58 is then pulled rearwardly from the section I0 and rod is pulled rearwardly relative to section 58 so that end 82 may enter socket portion 84.

Shank 94 is raised so that sleeve 98 will slide over extension 92 and rod I04 is raised so that sleeve I08 will slide over extension I02. Section 58 may be retained in a vertically inclined position, as shown in Figures 1 and 11, with the handle structure 92I I 2 rotated to raise the tube 28 and the lift element 42 attached thereto.

Having described the invention, what claimed as new is:

1. A collapsible axle jack comprising an elongated base channel, a jack cylinder pivoted at one end to one of the base channels and swingabl into and out of the base channel, an internally thread edinthe cylinder, a screw receivably engaged in the tube and rotatably supported by the cylinder, a lift arm attached to the tube and movable therewith, a first operating rod section rotatably supported in the base channel and having one end operatively connected to the screw for rotating the screw, an auxiliary channel slidably received in the base channel and extendable from the other end of the base channel, a second rod section rotatably supported by the auxiliary channel and engageable with the first rod section to permit rotation of th rod sections as a unit, and a hand grip attached to the second rod section, said tube having a plurality of longitudinally spaced teeth thereon, said cylinder having a longitudinal slot slidably receiving the teeth, said arm having an opening receiving the cylinder and a notch accommodating a selected one of the teeth.

2. A collapsible axle jack comprising a telescoped base member composed of two channel shaped sections, a rod rotatably supported by each section, said rods adapted to be disposed one above the other when the sections are disposed in juxtaposition, means releasably coupling the rods together whereby the same may be rotated as a unit when the sections are extended from each other, a hollow post pivoted to one of the sections and movable into and out of said one of the sections, and a lifting member slidably and adjustably carried by the post and oper atively connected to the rod supported by the said one of the sections.

3. A collapsible axle jack comprising an elongated base channel, a jack cylinder pivoted at one end to one of the base channels and swingable into and out of the base channel, an internally threaded tube slidably received in the cylinder, a screw receivably engaged in the tube and rotatably supported by the cylinder, a lift arm attached to the tube and movable therewith, a first operating rod section rotatably supported in the base channel and having one end operatively connected to the screw for rotating the screw, an auxiliary channel slidably received in the base channel and extendable from the other end of the base channel, a second rod section rotatably supported by the auxiliary channel and engageable with the first rod section to permit rotation of the rod sections as a unit, and a hand grip attached to the second rod section, said hand grip comprising an elongated shank having a laterally projecting end, a rod element pivoted to said laterally projecting end, a sleeve slidable over the rod element and the laterally projecting end, and a spring retaining the sleeve over the laterally projecting end and the rod element and thereby retaining the rod element and the laterally projecting end coaxial.

4. A collapsible axle jack comprising a telescoped base member composed of two channel shaped sections, a rod rotatably supported by each section, said rods adapted to be disposed one above the other when the sections are disposed in juxtaposition, means releasably coupling the rods together whereby the same may be rotated as a unit when the sections are extended from each other, a hollow post pivoted to one of the sections and movable into and out of said one of the sections, a lifting member slidably and adjustably carried by the post and operatively connected to the rod in said one of said sections, and a collapsible handle structure attached to the rod in the other section and movable into said other section.

5. A collapsible jack comprising a base composed of first and second telescoped channel sections each havin an inner end and an outer end, a first rod rotatably supported in the first section, a second rod slidably and rotatably supported by the second section and adapted to underlie the first rod when the first section is disposed within the second section, a hollow post pivoted to the outer end of the first section and movable into and out of the first section, a tube slidably received in the post, a lift element engaged with the tube and slidable with the tube, means operatively connecting the tube to the first rod whereby the tube may be moved longitudinally through the post, a universal coupling element attached to the inner end of the first rod and including a socket portion, said second rod having a multisided end receivable in the socket portion when the sections are extended, and a collapsible handle structure attached to the inner end of the second rod and movable into and out of the second section.

6. A collapsible jack comprising a base composed of first and second telescoped channel sections each having an inner end and an outer end, a first rod rotatably supported in the first section, a second rod slidably and rotatably supported by the second section and adapted to underlie the first rod when the first section is disposed within the second section, a hollow post pivoted to the outer end of the first section and movable into and out of the first section, a tube slidably received in the post, a lift element engaged with the tube and slidable with the tube, means operatively connecting the tube to the first rod whereby the tube may be moved longitudinally through the post, a universal coupling element attached to the inner end of the first rod and includin a socket portion, said second rod having a multisided end receivable in the socket portion when th sections are extended, said second rod having a lateral extension at its inner end, an elongated shank pivoted at one end to the extension, a spring urged sleeve slidable on the shank and urged over the extension to lock the shank against pivotal movement, the other end of said shank having a laterally projecting portion, a short rod pivoted to the last named portion, and a second spring urged sleeve slidable on the short rod and covering the last named portion to prevent pivotal movement of the short rod until the second sleeve is retracted.

7. A collapsible jack comprising a base composed of first and second telescoped channel sections each having an inner end and an outer end, a first rod rotatably supported in the first section, a second rod slidably and rotatably supported by the second section and adapted to underlie the first rod when the first section is disposed Within the second section, a hollow post pivoted to the outer end of the first section and movable into and out of the first section, a tube slidably received in the post, a lift element engaged with the tube and slidable with the tube, means operatively connecting the tube to the first rod whereby the tube may be moved longitudinally through the post, means releasably coupling the rods together when the sections are extended to permit rotation of the rods as a unit, and a collapsible handle structure attached to the second rod and movable into and out of the second section, said tube having a series of longitudinally spaced teeth, said post having a longitudinal slot slidably receiving the teeth, said lift element having an opening accommodating the post and permitting sliding movement of the lift element on the post, and said. lift element also having a slot for engaging a selected one of the teeth.

8. A collapsible jack comprising a base composed of first and second telescoped channel sections each having an inner end and an outer end, a first rod rotatably supported in the first section, a second rod slidably and rotatably supported by the second section and adapted to underlie the first rod when the first section is disposed within the second section, a hollow post pivoted to the outer end of the first section and movable into and out of the first section, a tube slidably received in the post, a lift element engaged with the tube and slidable with the tube, means operatively connecting the tube to the first rod whereby the tube may be moved longitudinally through the post, means releasably coupling the rods together when the sections are extended to permit rotation of the rods as a unit, and a collapsible handle structure attached to the second rod and movable into and out of the second section, and a transverse pin carried by the inner end of the first section, and stop lugs on the outer end of the second section engageable with the pin as the second section is moved outwardly from the inner end of the first section, to limit sliding movement of the sections away from each other.

ALTON M. OLSON.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,361,593 Lang Dec. 7, 1920 2,086,788 Wolff July 13, 1937 2,253,347 Plymesser Aug. 19, 1941 2,559,182 Adams et a1. July 3, 1951 2,600,741 Drum June 17, 1952 

